I have been a proud owner of a 300tdi for about a year and can only talk very highly of the beast. Its done 120K, its an auto and I tow a large caravan, a Lunar Delta twin axle weighing in a healthy 1600 kgs. In that year I have put a new front propshaft on and 2 new tyres (my choice). I do have an oil leak from the steering box which I believe is a common problem so I keep topping it up monthly as it only require a small drop. Its the 7 seater model and fitted with SLS. I have just bought a TD5 auto 7 seater with SLS (air suspension) type. What is the mechanical differences between these two types of suspensions as I note that the TD5 caravan / trailer noseweight is limited to 250 kgs which I will struggle to achieve with the Lunar. I have had no problems with excessive nose weights on the 300tdi.